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- The elements found in the cell include
- carbon,
- oxygen,
- hydrogen,
- nitrogen,
- sulphur,
- phosphorus,
- calcium,
- sodium,
- potassium,
- magnesium,
- iron
- chlorine,
- The chemical compounds in the cell can be classified into two groups,
- organic: compounds which contain the element carbon and originate from living things. Example: carbohydrates, lipids, proteins and nucleic acids
- inorganic: compounds which do not originate from living things. Example: water and mineral salts.
- .Organic compounds are synthesised by the cells themselves whereas inorganic compounds are not synthesised by the cells themselves but are obtained from the external environment.